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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 50993] New: OutOfMemory Exception on Large docx
Date Tue, 29 Mar 2011 17:37:29 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=50993

           Summary: OutOfMemory Exception on Large docx
           Product: POI
           Version: 3.7
          Platform: PC
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: XWPF
        AssignedTo: dev@poi.apache.org
        ReportedBy: peter.nordquist@pnl.gov


Loading the attached document with
org.apache.poi.xwpf.usermodel.XWPFDocument(InputStream is) causes an
OutOfMemory Exception with 4GB of heap space but with 8GB it does work.  We use
POI in an Application Server and multiple users using the system will cause
this problem more frequently.  I realize it is a ~23k page document and it
seems to take some time to load into any editor.

Example Stack Trace:

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.attr(Cur.java:3039)
    at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.attr(Cur.java:3060)
    at
org.apache.xmlbeans.impl.store.Locale$SaxHandler.startElement(Locale.java:3254)
    at
org.apache.xmlbeans.impl.piccolo.xml.Piccolo.reportStartTag(Piccolo.java:1082)
    at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseAttributesNS(PiccoloLexer.java:1802)
    at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseOpenTagNS(PiccoloLexer.java:1521)
    at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseTagNS(PiccoloLexer.java:1362)
    at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseXMLNS(PiccoloLexer.java:1293)
    at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseXML(PiccoloLexer.java:1261)
    at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.yylex(PiccoloLexer.java:4808)
    at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yylex(Piccolo.java:1290)
    at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yyparse(Piccolo.java:1400)
    at org.apache.xmlbeans.impl.piccolo.xml.Piccolo.parse(Piccolo.java:714)
    at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3439)
    at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1270)
    at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1257)
    at
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:345)
    at
org.openxmlformats.schemas.wordprocessingml.x2006.main.DocumentDocument$Factory.parse(Unknown
Source)
    at
org.apache.poi.xwpf.usermodel.XWPFDocument.onDocumentRead(XWPFDocument.java:135)
    at org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:190)
    at org.apache.poi.xwpf.usermodel.XWPFDocument.<init>(XWPFDocument.java:114)
    at LoadBigDoc.main(LoadBigDoc.java:12)


Example Code:
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;

import org.apache.poi.xwpf.usermodel.XWPFDocument;

public class LoadBigDoc {

  public static void main(final String[] args) throws Exception {
    final InputStream is = new BufferedInputStream(new FileInputStream(new
File("ANA3.blast.docx")));
    new XWPFDocument(is);
  }
}

This code assumes it is run with the correct classpath and the file is in the
current working directory.

Platforms:
Windows 7 64-bit
Mac OS X 10.6.7 64-bit
RHEL 5.5 64-bit

All running Sun JDK 1.6.0_20 64-bit

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